/
context.go
156 lines (128 loc) · 3.6 KB
/
context.go
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package helmreleaser
import (
"fmt"
"sort"
"strings"
"github.com/Masterminds/semver"
"github.com/pkg/errors"
"gopkg.in/src-d/go-git.v4"
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/plumbing/object"
"gopkg.in/src-d/go-git.v4/plumbing/transport"
)
type HelmReleaserContext struct {
Major int64
Minor int64
Patch int64
Tag string
GitRemote GitRemote
changelog string
}
type GitRemote struct {
Owner string
Name string
}
func (c HelmReleaserContext) GetChangelog() string {
return c.changelog
}
// CreateContext will create a context that can be used to render
// The dir param should be the path in the git repo, not the temp directory
func (h HelmReleaser) CreateContext(dir string, scmToken string) (*HelmReleaserContext, error) {
r, err := git.PlainOpenWithOptions(dir, &git.PlainOpenOptions{
DetectDotGit: true,
})
if err != nil {
return nil, errors.Wrap(err, "failed to open git repo")
}
tags, err := r.Tags()
if err != nil {
return nil, errors.Wrap(err, "failed to list tags")
}
defer tags.Close()
semverTags := []*semver.Version{}
fullVersions := make(map[string]string)
tags.ForEach(func(t *plumbing.Reference) error {
tagNameSplit := strings.Split(t.Name().String(), "/")
if len(tagNameSplit) < 3 {
return errors.Errorf("unexpected tag format: %s", t.Name())
}
tagName := strings.Join(tagNameSplit[2:], "/")
ver, err := semver.NewVersion(tagName)
if err != nil {
return errors.Wrap(err, "failed to parse semver tag")
}
fullVersions[ver.Original()] = t.Name().String()
semverTags = append(semverTags, ver)
return nil
})
if len(semverTags) == 0 {
return nil, errors.New("no tags found in repo")
}
sort.Sort(semver.Collection(semverTags))
for i := len(semverTags)/2 - 1; i >= 0; i-- {
opp := len(semverTags) - 1 - i
semverTags[i], semverTags[opp] = semverTags[opp], semverTags[i]
}
latestTag := semverTags[0]
originRemote, err := r.Remote("origin")
if err != nil {
return nil, errors.New("no remote named 'origin' found")
}
endpoint, err := transport.NewEndpoint(originRemote.Config().URLs[0])
if err != nil {
return nil, errors.Wrap(err, "failed to parse git url")
}
splitPath := strings.Split(endpoint.Path, "/")
helmReleaserContext := HelmReleaserContext{
Tag: latestTag.Original(),
Major: latestTag.Major(),
Minor: latestTag.Minor(),
Patch: latestTag.Patch(),
GitRemote: GitRemote{
Owner: splitPath[0],
Name: splitPath[1],
},
}
if h.Archive != nil {
if h.Archive.GitHub != nil {
if h.Archive.GitHub.Owner != "" {
helmReleaserContext.GitRemote.Owner = h.Archive.GitHub.Owner
}
if h.Archive.GitHub.Name != "" {
helmReleaserContext.GitRemote.Name = h.Archive.GitHub.Name
}
}
}
changelog, err := readChangelog(r, fullVersions[latestTag.Original()])
if err != nil {
return nil, errors.Wrap(err, "failed to create a changelog")
}
helmReleaserContext.changelog = changelog
return &helmReleaserContext, nil
}
func readChangelog(r *git.Repository, tag string) (string, error) {
var hash plumbing.Hash
tags, err := r.Tags()
if err != nil {
return "", errors.Wrap(err, "failed to parse git tags")
}
tags.ForEach(func(t *plumbing.Reference) error {
if t.Name().String() == tag {
hash = t.Hash()
}
return nil
})
logOptions := &git.LogOptions{
From: hash,
}
logs, err := r.Log(logOptions)
if err != nil {
return "", errors.Wrap(err, "failed to read git log")
}
changelog := "## Changelog\n\n"
logs.ForEach(func(commit *object.Commit) error {
changelog = fmt.Sprintf("%s%s %s\n", changelog, commit.Hash.String()[0:7], commit.Message)
return nil
})
return changelog, nil
}